Allah T'ala says in the Holy Quran:
وَلَقَدْ خَلَقْنَاكُمْ ثُمَّ صَوَّرْنَاكُمْ ثُمَّ قُلْنَا لِلْمَلآئِكَةِ اسْجُدُواْ لآدَمَ فَسَجَدُواْ إِلاَّ إِبْلِيسَ لَمْ يَكُن مِّنَ السَّاجِدِينَ
قَالَ مَا مَنَعَكَ أَلاَّ تَسْجُدَ إِذْ أَمَرْتُكَ قَالَ أَنَاْ خَيْرٌ مِّنْهُ خَلَقْتَنِي مِن نَّارٍ وَخَلَقْتَهُ مِن طِينٍ
قَالَ فَاهْبِطْ مِنْهَا فَمَا يَكُونُ لَكَ أَن تَتَكَبَّرَ فِيهَا فَاخْرُجْ إِنَّكَ مِنَ الصَّاغِرِينَ
Muhammad (s.a.a.w.) asked people to shun notions of racial, family or any other form of superiority based on mundane things and said that righteousness alone was the criterion of one's superiority over another. It has already been shown how he mixed with everyone on equal terms, how he ate with slaves, servants and the poorest on the same sheet (a practice that is still followed in Arabia), how he refused all privileges and worked like any ordinary labourer. Two instances may, however, be quoted here:
Once the Prophet (s.a.a.w.) visited Saad Bin Abadah. While returning Saad sent his son Quais with him. The Prophet (s.a.a.w.) asked Quais to mount his camel with him. Quais hesitated out of respect but the Prophet (s.a.a.w.) insisted: "Either mount the camel or go back." Quais decided to go back. [Abu Dawood]
On another occasion he was travelling on his camel over hilly terrain with a disciple, Uqba Bin Aamir. After going some distance, he asked Uqba to ride the camel, but Uqba thought this would be showing disrespect to the Prophet (s.a.a.w.). But the Prophet (s.a.a.w.) insisted and he had to comply. The Prophet (s.a.a.w.) himself walked on foot as he did not want to put too much load on the animal. [Nasai]
The prisoners of war of Badr included Abbas, the uncle of the Prophet (s.a.a.w.). Some people were prepared to forgo their shares and remit the Prophet's (s.a.a.w.) ransom but he declined saying that he could make no distinctions. [Sahih Bukhari]
During a halt on a journey, the companions apportioned work among themselves for preparing food. The Prophet (s.a.a.w.) took upon himself the task of collecting firewood. His companions pleaded that they would do it and that he need not take the trouble, but he replied,
"It is true, but I do not like to attribute any distinction to myself. Allah does not like the man who considers himself superior to his companions." [Zarqani, Vol. 4 pg. 306)]
by Athar Husain
An excerpt from the book entitled "The Message of Mohammad," by Athar Husain.
Muhammad (s.a.a.w.) was of a height a little above the average. He was of sturdy build with long muscular limbs and tapering fingers. The hair of his head was long and thick with some waves in them. His forehead was large and prominent, his eyelashes were long and thick, his nose was sloping, his mouth was somewhat large and his teeth were well set. His cheeks were spare and he had a pleasant smile. His eyes were large and black with a touch of brown. His beard was thick and at the time of his death, he had seventeen grey hairs in it. He had a thin line of fine hair over his neck and chest. He was fair of complexion and altogether was so handsome that Abu Bakr composed this couplet about him:
"As there is no darkness in the moonlit night so is Mustafa, the well-wisher, bright."
His gait was firm and he walked so fast that others found it difficult to keep pace with him. His face was genial but at times, when he was deep in thought, there there were long periods of silence, yet he always kept himself busy with something. He did not speak unnecessarily and what he said was always to the point and without any padding. At times he would make his meaning clear by slowly repeating what he had said. His laugh was mostly a smile. He kept his feelings under firm control - when annoyed, he would turn aside or keep silent, when pleased he would lower his eyes [Tirmidhi].
His dress generally consisted of a shirt, tamad (trousers), a sheet thrown round the shoulders and a turban. On rare occasions, he would put on costly robes presented to him by foreign emissaries in the later part of his life. [Ahmed, Musnad, Hafiz Bin Qayyim]
His blanket had several patches. [Tirmidhi] He had very few spare clothes, but he kept them spotlessly clean. [Bukhari] He wanted others also to put on simple but clean clothes. Once he saw a person putting on dirty clothes and remarked,
"Why can't this man wash them." [Abu Dawood]
On another occasion he enquired of a person in dirty clothes whether he had any income. Upon getting a reply in the affirmative, he observed,
"When Allah has blessed you with His bounty, your appearance should reflect it." [Abu Dawood]
He used to observe:
"Cleanliness is piety."
Reference url: http://muslim-canada.org/muhammadatharhusain.html